java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/elevator_spec14_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:08:10,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:08:10,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:08:10,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:08:10,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:08:10,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:08:10,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:08:10,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:08:10,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:08:10,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:08:10,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:08:10,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:08:10,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:08:10,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:08:10,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:08:10,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:08:10,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:08:10,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:08:10,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:08:10,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:08:10,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:08:10,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:08:10,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:08:10,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:08:10,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:08:10,557 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:08:10,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:08:10,558 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:08:10,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:08:10,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:08:10,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:08:10,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:08:10,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:08:10,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:08:10,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:08:10,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:08:10,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:08:10,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:08:10,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:08:10,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:08:10,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:08:10,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:08:10,584 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:08:10,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:08:10,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:08:10,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:08:10,586 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:08:10,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:08:10,586 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:08:10,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:08:10,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:08:10,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:08:10,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:08:10,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:08:10,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:08:10,587 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:08:10,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:08:10,588 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:08:10,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:08:10,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:08:10,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:08:10,589 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:08:10,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:08:10,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:08:10,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:08:10,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:08:10,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:08:10,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:08:10,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:08:10,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:08:10,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:08:10,846 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:08:10,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:08:10,866 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:08:10,868 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:08:10,868 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:08:10,868 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product27.cil.c [2019-10-15 01:08:10,930 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac9789c02/991403f54dbc4c37a913e7d050dfaab5/FLAG9d1406741 [2019-10-15 01:08:11,561 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:08:11,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product27.cil.c [2019-10-15 01:08:11,599 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac9789c02/991403f54dbc4c37a913e7d050dfaab5/FLAG9d1406741 [2019-10-15 01:08:11,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac9789c02/991403f54dbc4c37a913e7d050dfaab5 [2019-10-15 01:08:11,808 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:08:11,810 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:08:11,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:08:11,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:08:11,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:08:11,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:08:11" (1/1) ... [2019-10-15 01:08:11,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7020f9f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:11, skipping insertion in model container [2019-10-15 01:08:11,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:08:11" (1/1) ... [2019-10-15 01:08:11,827 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:08:11,913 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:08:12,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:08:12,712 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:08:12,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:08:12,933 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:08:12,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:12 WrapperNode [2019-10-15 01:08:12,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:08:12,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:08:12,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:08:12,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:08:12,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:12" (1/1) ... [2019-10-15 01:08:12,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:12" (1/1) ... [2019-10-15 01:08:13,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:12" (1/1) ... [2019-10-15 01:08:13,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:12" (1/1) ... [2019-10-15 01:08:13,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:12" (1/1) ... [2019-10-15 01:08:13,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:12" (1/1) ... [2019-10-15 01:08:13,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:12" (1/1) ... [2019-10-15 01:08:13,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:08:13,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:08:13,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:08:13,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:08:13,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:08:13,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:08:13,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:08:13,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:08:13,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:08:13,254 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-15 01:08:13,255 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-15 01:08:13,255 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-15 01:08:13,255 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-15 01:08:13,255 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-15 01:08:13,256 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-15 01:08:13,256 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-15 01:08:13,256 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-15 01:08:13,256 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-15 01:08:13,258 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-15 01:08:13,258 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-15 01:08:13,258 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-15 01:08:13,260 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-15 01:08:13,261 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-15 01:08:13,261 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-15 01:08:13,262 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-15 01:08:13,262 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-15 01:08:13,262 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:08:13,262 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-15 01:08:13,263 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-15 01:08:13,263 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-15 01:08:13,263 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:08:13,263 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-15 01:08:13,263 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-15 01:08:13,263 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-15 01:08:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 01:08:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-15 01:08:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-15 01:08:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-15 01:08:13,264 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-15 01:08:13,265 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-15 01:08:13,265 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-15 01:08:13,265 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-15 01:08:13,265 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-15 01:08:13,265 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-15 01:08:13,266 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-15 01:08:13,266 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-15 01:08:13,266 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-15 01:08:13,266 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 01:08:13,266 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-15 01:08:13,266 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-15 01:08:13,267 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-15 01:08:13,267 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 01:08:13,267 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-15 01:08:13,267 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:08:13,267 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 01:08:13,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:08:13,268 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-15 01:08:13,268 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-15 01:08:13,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:08:13,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:08:13,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:08:13,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:08:13,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:08:13,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:08:13,269 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:08:13,269 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:08:13,270 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:08:13,270 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:08:13,270 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:08:13,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-10-15 01:08:13,270 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-15 01:08:13,270 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-15 01:08:13,271 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-15 01:08:13,271 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-15 01:08:13,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-15 01:08:13,271 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-15 01:08:13,271 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-15 01:08:13,272 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-15 01:08:13,272 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-15 01:08:13,272 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-15 01:08:13,272 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-15 01:08:13,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:08:13,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:08:13,273 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:08:13,273 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:08:13,273 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-15 01:08:13,273 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-15 01:08:13,273 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-15 01:08:13,274 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-15 01:08:13,274 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-15 01:08:13,274 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-15 01:08:13,274 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-15 01:08:13,274 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-15 01:08:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-15 01:08:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 01:08:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-15 01:08:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-15 01:08:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-15 01:08:13,275 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-15 01:08:13,276 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-15 01:08:13,276 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-15 01:08:13,277 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-15 01:08:13,277 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-15 01:08:13,277 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-15 01:08:13,277 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-15 01:08:13,277 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-15 01:08:13,278 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-15 01:08:13,278 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-15 01:08:13,278 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-15 01:08:13,278 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-15 01:08:13,278 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-15 01:08:13,279 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-15 01:08:13,279 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-15 01:08:13,279 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-15 01:08:13,279 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-15 01:08:13,279 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-15 01:08:13,279 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-15 01:08:13,280 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-15 01:08:13,280 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-15 01:08:13,280 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-15 01:08:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-15 01:08:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-15 01:08:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-10-15 01:08:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:08:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-15 01:08:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:08:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-15 01:08:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-15 01:08:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-15 01:08:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-15 01:08:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-15 01:08:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-15 01:08:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-15 01:08:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-15 01:08:13,285 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-15 01:08:13,285 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-15 01:08:13,285 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 01:08:13,285 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-15 01:08:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-15 01:08:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-15 01:08:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 01:08:13,287 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-15 01:08:13,290 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:08:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:08:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 01:08:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:08:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:08:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:08:13,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:08:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-15 01:08:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-15 01:08:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:08:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:08:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:08:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:08:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:08:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:08:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:08:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:08:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:08:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:08:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:08:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:08:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:08:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:08:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:08:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:08:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:08:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-15 01:08:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:08:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:08:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:08:15,504 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:08:15,504 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-15 01:08:15,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:08:15 BoogieIcfgContainer [2019-10-15 01:08:15,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:08:15,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:08:15,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:08:15,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:08:15,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:08:11" (1/3) ... [2019-10-15 01:08:15,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38016c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:08:15, skipping insertion in model container [2019-10-15 01:08:15,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:08:12" (2/3) ... [2019-10-15 01:08:15,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38016c6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:08:15, skipping insertion in model container [2019-10-15 01:08:15,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:08:15" (3/3) ... [2019-10-15 01:08:15,515 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product27.cil.c [2019-10-15 01:08:15,528 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:08:15,540 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:08:15,554 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:08:15,600 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:08:15,601 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:08:15,601 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:08:15,601 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:08:15,601 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:08:15,601 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:08:15,601 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:08:15,601 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:08:15,646 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states. [2019-10-15 01:08:15,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-15 01:08:15,679 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:15,681 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:15,684 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:15,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:15,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1973380872, now seen corresponding path program 1 times [2019-10-15 01:08:15,701 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:15,701 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694315481] [2019-10-15 01:08:15,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:15,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:15,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:16,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694315481] [2019-10-15 01:08:16,464 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:16,464 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:16,465 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019617615] [2019-10-15 01:08:16,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:16,474 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:16,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:16,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:16,492 INFO L87 Difference]: Start difference. First operand 751 states. Second operand 4 states. [2019-10-15 01:08:16,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:16,767 INFO L93 Difference]: Finished difference Result 1200 states and 1920 transitions. [2019-10-15 01:08:16,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:16,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2019-10-15 01:08:16,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:16,795 INFO L225 Difference]: With dead ends: 1200 [2019-10-15 01:08:16,795 INFO L226 Difference]: Without dead ends: 603 [2019-10-15 01:08:16,809 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:16,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-15 01:08:16,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-10-15 01:08:16,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-15 01:08:16,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 951 transitions. [2019-10-15 01:08:16,940 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 951 transitions. Word has length 135 [2019-10-15 01:08:16,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:16,941 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 951 transitions. [2019-10-15 01:08:16,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:16,941 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 951 transitions. [2019-10-15 01:08:16,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-15 01:08:16,949 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:16,949 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:16,949 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:16,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:16,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1520755359, now seen corresponding path program 1 times [2019-10-15 01:08:16,950 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:16,950 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627697019] [2019-10-15 01:08:16,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:16,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:16,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:17,123 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:17,123 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627697019] [2019-10-15 01:08:17,124 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:17,124 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:17,124 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93994327] [2019-10-15 01:08:17,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:17,131 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:17,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:17,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:17,132 INFO L87 Difference]: Start difference. First operand 603 states and 951 transitions. Second operand 4 states. [2019-10-15 01:08:17,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:17,244 INFO L93 Difference]: Finished difference Result 1173 states and 1863 transitions. [2019-10-15 01:08:17,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:17,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2019-10-15 01:08:17,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:17,251 INFO L225 Difference]: With dead ends: 1173 [2019-10-15 01:08:17,252 INFO L226 Difference]: Without dead ends: 603 [2019-10-15 01:08:17,256 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:17,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-15 01:08:17,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-10-15 01:08:17,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-15 01:08:17,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 950 transitions. [2019-10-15 01:08:17,296 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 950 transitions. Word has length 136 [2019-10-15 01:08:17,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:17,296 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 950 transitions. [2019-10-15 01:08:17,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:17,297 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 950 transitions. [2019-10-15 01:08:17,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-15 01:08:17,303 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:17,303 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:17,304 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:17,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:17,304 INFO L82 PathProgramCache]: Analyzing trace with hash -25629804, now seen corresponding path program 1 times [2019-10-15 01:08:17,305 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:17,305 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326910503] [2019-10-15 01:08:17,305 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:17,305 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:17,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:17,569 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:17,570 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326910503] [2019-10-15 01:08:17,570 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:17,570 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:17,571 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752755] [2019-10-15 01:08:17,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:17,574 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:17,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:17,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:17,575 INFO L87 Difference]: Start difference. First operand 603 states and 950 transitions. Second operand 4 states. [2019-10-15 01:08:17,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:17,679 INFO L93 Difference]: Finished difference Result 1173 states and 1862 transitions. [2019-10-15 01:08:17,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:17,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2019-10-15 01:08:17,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:17,690 INFO L225 Difference]: With dead ends: 1173 [2019-10-15 01:08:17,691 INFO L226 Difference]: Without dead ends: 603 [2019-10-15 01:08:17,696 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:17,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-15 01:08:17,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-10-15 01:08:17,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-15 01:08:17,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 949 transitions. [2019-10-15 01:08:17,755 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 949 transitions. Word has length 137 [2019-10-15 01:08:17,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:17,755 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 949 transitions. [2019-10-15 01:08:17,756 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:17,756 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 949 transitions. [2019-10-15 01:08:17,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-15 01:08:17,767 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:17,767 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:17,768 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:17,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:17,769 INFO L82 PathProgramCache]: Analyzing trace with hash -572741315, now seen corresponding path program 1 times [2019-10-15 01:08:17,769 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:17,769 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120207783] [2019-10-15 01:08:17,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:17,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:17,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:18,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120207783] [2019-10-15 01:08:18,031 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:18,031 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:18,031 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303834836] [2019-10-15 01:08:18,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:18,033 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:18,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:18,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:18,034 INFO L87 Difference]: Start difference. First operand 603 states and 949 transitions. Second operand 4 states. [2019-10-15 01:08:18,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:18,115 INFO L93 Difference]: Finished difference Result 1173 states and 1861 transitions. [2019-10-15 01:08:18,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:18,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2019-10-15 01:08:18,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:18,122 INFO L225 Difference]: With dead ends: 1173 [2019-10-15 01:08:18,123 INFO L226 Difference]: Without dead ends: 603 [2019-10-15 01:08:18,127 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:18,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-15 01:08:18,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-10-15 01:08:18,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-15 01:08:18,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 948 transitions. [2019-10-15 01:08:18,158 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 948 transitions. Word has length 138 [2019-10-15 01:08:18,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:18,159 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 948 transitions. [2019-10-15 01:08:18,159 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:18,159 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 948 transitions. [2019-10-15 01:08:18,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-10-15 01:08:18,165 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:18,165 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:18,165 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:18,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:18,166 INFO L82 PathProgramCache]: Analyzing trace with hash -4692432, now seen corresponding path program 1 times [2019-10-15 01:08:18,166 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:18,167 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760522478] [2019-10-15 01:08:18,167 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:18,167 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:18,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:18,368 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760522478] [2019-10-15 01:08:18,369 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:18,369 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:18,369 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051600007] [2019-10-15 01:08:18,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:18,370 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:18,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:18,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:18,371 INFO L87 Difference]: Start difference. First operand 603 states and 948 transitions. Second operand 4 states. [2019-10-15 01:08:18,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:18,475 INFO L93 Difference]: Finished difference Result 1173 states and 1860 transitions. [2019-10-15 01:08:18,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:08:18,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2019-10-15 01:08:18,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:18,482 INFO L225 Difference]: With dead ends: 1173 [2019-10-15 01:08:18,482 INFO L226 Difference]: Without dead ends: 603 [2019-10-15 01:08:18,486 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:18,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-15 01:08:18,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-10-15 01:08:18,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-15 01:08:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 947 transitions. [2019-10-15 01:08:18,512 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 947 transitions. Word has length 139 [2019-10-15 01:08:18,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:18,512 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 947 transitions. [2019-10-15 01:08:18,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:18,513 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 947 transitions. [2019-10-15 01:08:18,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 01:08:18,517 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:18,517 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:18,518 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:18,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:18,519 INFO L82 PathProgramCache]: Analyzing trace with hash 773590297, now seen corresponding path program 1 times [2019-10-15 01:08:18,519 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:18,519 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874306043] [2019-10-15 01:08:18,520 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:18,520 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:18,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:18,762 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:18,762 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874306043] [2019-10-15 01:08:18,763 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:18,763 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:08:18,763 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483221770] [2019-10-15 01:08:18,764 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:08:18,764 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:18,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:08:18,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:08:18,765 INFO L87 Difference]: Start difference. First operand 603 states and 947 transitions. Second operand 10 states. [2019-10-15 01:08:18,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:18,975 INFO L93 Difference]: Finished difference Result 1178 states and 1867 transitions. [2019-10-15 01:08:18,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:08:18,976 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 140 [2019-10-15 01:08:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:18,982 INFO L225 Difference]: With dead ends: 1178 [2019-10-15 01:08:18,982 INFO L226 Difference]: Without dead ends: 612 [2019-10-15 01:08:18,986 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:18,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-10-15 01:08:19,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 610. [2019-10-15 01:08:19,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 610 states. [2019-10-15 01:08:19,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 957 transitions. [2019-10-15 01:08:19,019 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 957 transitions. Word has length 140 [2019-10-15 01:08:19,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:19,020 INFO L462 AbstractCegarLoop]: Abstraction has 610 states and 957 transitions. [2019-10-15 01:08:19,020 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:08:19,020 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 957 transitions. [2019-10-15 01:08:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 01:08:19,024 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:19,025 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:19,025 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:19,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:19,025 INFO L82 PathProgramCache]: Analyzing trace with hash -212992392, now seen corresponding path program 1 times [2019-10-15 01:08:19,026 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:19,026 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685149051] [2019-10-15 01:08:19,026 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,026 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:19,194 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:19,195 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685149051] [2019-10-15 01:08:19,195 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:19,195 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:08:19,195 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378925719] [2019-10-15 01:08:19,196 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:08:19,197 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:19,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:08:19,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:08:19,198 INFO L87 Difference]: Start difference. First operand 610 states and 957 transitions. Second operand 4 states. [2019-10-15 01:08:19,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:19,270 INFO L93 Difference]: Finished difference Result 1179 states and 1868 transitions. [2019-10-15 01:08:19,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:08:19,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2019-10-15 01:08:19,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:19,276 INFO L225 Difference]: With dead ends: 1179 [2019-10-15 01:08:19,277 INFO L226 Difference]: Without dead ends: 606 [2019-10-15 01:08:19,281 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:08:19,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2019-10-15 01:08:19,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 606. [2019-10-15 01:08:19,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2019-10-15 01:08:19,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 950 transitions. [2019-10-15 01:08:19,306 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 950 transitions. Word has length 140 [2019-10-15 01:08:19,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:19,306 INFO L462 AbstractCegarLoop]: Abstraction has 606 states and 950 transitions. [2019-10-15 01:08:19,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:08:19,307 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 950 transitions. [2019-10-15 01:08:19,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-15 01:08:19,312 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:19,313 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:19,313 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:19,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:19,313 INFO L82 PathProgramCache]: Analyzing trace with hash -429509062, now seen corresponding path program 1 times [2019-10-15 01:08:19,314 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:19,314 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122663653] [2019-10-15 01:08:19,314 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,314 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:19,492 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:19,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122663653] [2019-10-15 01:08:19,493 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:19,493 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:19,494 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762660572] [2019-10-15 01:08:19,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:19,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:19,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:19,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:19,495 INFO L87 Difference]: Start difference. First operand 606 states and 950 transitions. Second operand 6 states. [2019-10-15 01:08:19,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:19,804 INFO L93 Difference]: Finished difference Result 1192 states and 1892 transitions. [2019-10-15 01:08:19,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:08:19,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2019-10-15 01:08:19,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:19,811 INFO L225 Difference]: With dead ends: 1192 [2019-10-15 01:08:19,812 INFO L226 Difference]: Without dead ends: 614 [2019-10-15 01:08:19,816 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:19,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-10-15 01:08:19,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 611. [2019-10-15 01:08:19,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2019-10-15 01:08:19,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 951 transitions. [2019-10-15 01:08:19,848 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 951 transitions. Word has length 141 [2019-10-15 01:08:19,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:19,849 INFO L462 AbstractCegarLoop]: Abstraction has 611 states and 951 transitions. [2019-10-15 01:08:19,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:19,850 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 951 transitions. [2019-10-15 01:08:19,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-15 01:08:19,855 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:19,855 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:19,855 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:19,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:19,856 INFO L82 PathProgramCache]: Analyzing trace with hash 16704540, now seen corresponding path program 1 times [2019-10-15 01:08:19,856 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:19,856 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089410380] [2019-10-15 01:08:19,856 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,857 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:19,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:20,037 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:20,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089410380] [2019-10-15 01:08:20,039 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:20,040 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:20,040 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296404553] [2019-10-15 01:08:20,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:20,041 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:20,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:20,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:20,043 INFO L87 Difference]: Start difference. First operand 611 states and 951 transitions. Second operand 6 states. [2019-10-15 01:08:20,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:20,345 INFO L93 Difference]: Finished difference Result 1155 states and 1807 transitions. [2019-10-15 01:08:20,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:20,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2019-10-15 01:08:20,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:20,357 INFO L225 Difference]: With dead ends: 1155 [2019-10-15 01:08:20,357 INFO L226 Difference]: Without dead ends: 611 [2019-10-15 01:08:20,360 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:20,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2019-10-15 01:08:20,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2019-10-15 01:08:20,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2019-10-15 01:08:20,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 947 transitions. [2019-10-15 01:08:20,383 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 947 transitions. Word has length 142 [2019-10-15 01:08:20,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:20,383 INFO L462 AbstractCegarLoop]: Abstraction has 611 states and 947 transitions. [2019-10-15 01:08:20,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:20,383 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 947 transitions. [2019-10-15 01:08:20,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-15 01:08:20,387 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:20,387 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:20,387 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:20,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:20,388 INFO L82 PathProgramCache]: Analyzing trace with hash -155948033, now seen corresponding path program 1 times [2019-10-15 01:08:20,388 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:20,388 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91145958] [2019-10-15 01:08:20,388 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:20,389 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:20,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:20,557 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:20,557 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91145958] [2019-10-15 01:08:20,558 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:20,558 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:20,559 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000624822] [2019-10-15 01:08:20,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:20,560 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:20,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:20,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:20,560 INFO L87 Difference]: Start difference. First operand 611 states and 947 transitions. Second operand 6 states. [2019-10-15 01:08:20,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:20,803 INFO L93 Difference]: Finished difference Result 1155 states and 1803 transitions. [2019-10-15 01:08:20,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:20,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2019-10-15 01:08:20,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:20,810 INFO L225 Difference]: With dead ends: 1155 [2019-10-15 01:08:20,810 INFO L226 Difference]: Without dead ends: 611 [2019-10-15 01:08:20,819 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:20,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2019-10-15 01:08:20,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2019-10-15 01:08:20,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2019-10-15 01:08:20,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 943 transitions. [2019-10-15 01:08:20,851 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 943 transitions. Word has length 143 [2019-10-15 01:08:20,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:20,851 INFO L462 AbstractCegarLoop]: Abstraction has 611 states and 943 transitions. [2019-10-15 01:08:20,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:20,851 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 943 transitions. [2019-10-15 01:08:20,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-15 01:08:20,856 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:20,857 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:20,857 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:20,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:20,858 INFO L82 PathProgramCache]: Analyzing trace with hash 121383039, now seen corresponding path program 1 times [2019-10-15 01:08:20,858 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:20,858 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288326545] [2019-10-15 01:08:20,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:20,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:20,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:21,013 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:21,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288326545] [2019-10-15 01:08:21,014 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:21,014 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:08:21,014 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144733173] [2019-10-15 01:08:21,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:08:21,015 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:21,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:08:21,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:08:21,015 INFO L87 Difference]: Start difference. First operand 611 states and 943 transitions. Second operand 7 states. [2019-10-15 01:08:21,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:21,115 INFO L93 Difference]: Finished difference Result 1158 states and 1803 transitions. [2019-10-15 01:08:21,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:08:21,116 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2019-10-15 01:08:21,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:21,121 INFO L225 Difference]: With dead ends: 1158 [2019-10-15 01:08:21,122 INFO L226 Difference]: Without dead ends: 593 [2019-10-15 01:08:21,125 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:21,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2019-10-15 01:08:21,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 590. [2019-10-15 01:08:21,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2019-10-15 01:08:21,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 906 transitions. [2019-10-15 01:08:21,148 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 906 transitions. Word has length 143 [2019-10-15 01:08:21,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:21,149 INFO L462 AbstractCegarLoop]: Abstraction has 590 states and 906 transitions. [2019-10-15 01:08:21,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:08:21,149 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 906 transitions. [2019-10-15 01:08:21,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-15 01:08:21,153 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:21,153 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:21,154 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:21,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:21,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1961384449, now seen corresponding path program 1 times [2019-10-15 01:08:21,154 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:21,155 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487126017] [2019-10-15 01:08:21,155 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:21,155 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:21,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:21,326 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487126017] [2019-10-15 01:08:21,326 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:21,326 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:21,326 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942384915] [2019-10-15 01:08:21,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:21,328 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:21,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:21,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:21,328 INFO L87 Difference]: Start difference. First operand 590 states and 906 transitions. Second operand 6 states. [2019-10-15 01:08:21,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:21,462 INFO L93 Difference]: Finished difference Result 1134 states and 1762 transitions. [2019-10-15 01:08:21,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:21,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2019-10-15 01:08:21,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:21,468 INFO L225 Difference]: With dead ends: 1134 [2019-10-15 01:08:21,468 INFO L226 Difference]: Without dead ends: 590 [2019-10-15 01:08:21,472 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:21,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2019-10-15 01:08:21,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2019-10-15 01:08:21,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2019-10-15 01:08:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 905 transitions. [2019-10-15 01:08:21,493 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 905 transitions. Word has length 144 [2019-10-15 01:08:21,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:21,494 INFO L462 AbstractCegarLoop]: Abstraction has 590 states and 905 transitions. [2019-10-15 01:08:21,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:21,494 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 905 transitions. [2019-10-15 01:08:21,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-15 01:08:21,501 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:21,501 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:21,501 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:21,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:21,502 INFO L82 PathProgramCache]: Analyzing trace with hash 2053809604, now seen corresponding path program 1 times [2019-10-15 01:08:21,502 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:21,502 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984941762] [2019-10-15 01:08:21,502 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:21,502 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:21,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:21,651 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984941762] [2019-10-15 01:08:21,651 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:21,651 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:08:21,651 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887585803] [2019-10-15 01:08:21,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:21,653 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:21,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:21,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:08:21,654 INFO L87 Difference]: Start difference. First operand 590 states and 905 transitions. Second operand 6 states. [2019-10-15 01:08:21,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:21,782 INFO L93 Difference]: Finished difference Result 1134 states and 1761 transitions. [2019-10-15 01:08:21,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:21,783 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2019-10-15 01:08:21,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:21,788 INFO L225 Difference]: With dead ends: 1134 [2019-10-15 01:08:21,788 INFO L226 Difference]: Without dead ends: 590 [2019-10-15 01:08:21,791 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:08:21,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2019-10-15 01:08:21,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2019-10-15 01:08:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2019-10-15 01:08:21,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 904 transitions. [2019-10-15 01:08:21,820 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 904 transitions. Word has length 145 [2019-10-15 01:08:21,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:21,822 INFO L462 AbstractCegarLoop]: Abstraction has 590 states and 904 transitions. [2019-10-15 01:08:21,822 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:21,822 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 904 transitions. [2019-10-15 01:08:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-15 01:08:21,826 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:21,826 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:21,826 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:21,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:21,827 INFO L82 PathProgramCache]: Analyzing trace with hash -496350234, now seen corresponding path program 1 times [2019-10-15 01:08:21,827 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:21,827 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769960412] [2019-10-15 01:08:21,828 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:21,828 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:21,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:22,023 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769960412] [2019-10-15 01:08:22,024 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:22,024 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 01:08:22,024 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602100296] [2019-10-15 01:08:22,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:08:22,025 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:22,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:08:22,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:08:22,025 INFO L87 Difference]: Start difference. First operand 590 states and 904 transitions. Second operand 12 states. [2019-10-15 01:08:22,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:22,303 INFO L93 Difference]: Finished difference Result 1140 states and 1771 transitions. [2019-10-15 01:08:22,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 01:08:22,303 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 146 [2019-10-15 01:08:22,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:22,308 INFO L225 Difference]: With dead ends: 1140 [2019-10-15 01:08:22,309 INFO L226 Difference]: Without dead ends: 597 [2019-10-15 01:08:22,313 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:08:22,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2019-10-15 01:08:22,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 595. [2019-10-15 01:08:22,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2019-10-15 01:08:22,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 910 transitions. [2019-10-15 01:08:22,346 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 910 transitions. Word has length 146 [2019-10-15 01:08:22,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:22,348 INFO L462 AbstractCegarLoop]: Abstraction has 595 states and 910 transitions. [2019-10-15 01:08:22,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:08:22,348 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 910 transitions. [2019-10-15 01:08:22,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-15 01:08:22,353 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:22,354 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:22,354 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:22,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:22,355 INFO L82 PathProgramCache]: Analyzing trace with hash 94623585, now seen corresponding path program 1 times [2019-10-15 01:08:22,355 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:22,355 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206891622] [2019-10-15 01:08:22,355 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:22,355 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:22,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:08:22,582 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206891622] [2019-10-15 01:08:22,582 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824719475] [2019-10-15 01:08:22,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:23,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 2628 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:08:23,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:08:23,227 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:23,358 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:08:23,359 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:23,359 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2019-10-15 01:08:23,359 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012911004] [2019-10-15 01:08:23,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:08:23,360 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:23,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:08:23,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:23,361 INFO L87 Difference]: Start difference. First operand 595 states and 910 transitions. Second operand 3 states. [2019-10-15 01:08:23,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:23,478 INFO L93 Difference]: Finished difference Result 1674 states and 2637 transitions. [2019-10-15 01:08:23,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:08:23,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2019-10-15 01:08:23,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:23,490 INFO L225 Difference]: With dead ends: 1674 [2019-10-15 01:08:23,490 INFO L226 Difference]: Without dead ends: 1132 [2019-10-15 01:08:23,495 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:23,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2019-10-15 01:08:23,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1124. [2019-10-15 01:08:23,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1124 states. [2019-10-15 01:08:23,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1755 transitions. [2019-10-15 01:08:23,547 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1755 transitions. Word has length 147 [2019-10-15 01:08:23,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:23,548 INFO L462 AbstractCegarLoop]: Abstraction has 1124 states and 1755 transitions. [2019-10-15 01:08:23,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:08:23,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1755 transitions. [2019-10-15 01:08:23,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-15 01:08:23,553 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:23,554 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:23,793 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:23,793 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:23,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:23,794 INFO L82 PathProgramCache]: Analyzing trace with hash -564907937, now seen corresponding path program 1 times [2019-10-15 01:08:23,794 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:23,794 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473328678] [2019-10-15 01:08:23,794 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:23,794 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:23,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:08:24,055 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473328678] [2019-10-15 01:08:24,055 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326913877] [2019-10-15 01:08:24,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:24,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 2631 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:24,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:08:24,724 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:25,103 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:08:25,104 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:25,104 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 6] total 17 [2019-10-15 01:08:25,104 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655286592] [2019-10-15 01:08:25,105 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:25,105 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:25,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:25,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:08:25,106 INFO L87 Difference]: Start difference. First operand 1124 states and 1755 transitions. Second operand 5 states. [2019-10-15 01:08:26,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:26,120 INFO L93 Difference]: Finished difference Result 2211 states and 3542 transitions. [2019-10-15 01:08:26,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:26,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2019-10-15 01:08:26,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:26,136 INFO L225 Difference]: With dead ends: 2211 [2019-10-15 01:08:26,136 INFO L226 Difference]: Without dead ends: 1140 [2019-10-15 01:08:26,144 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 294 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:08:26,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2019-10-15 01:08:26,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1140. [2019-10-15 01:08:26,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1140 states. [2019-10-15 01:08:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1781 transitions. [2019-10-15 01:08:26,217 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1781 transitions. Word has length 147 [2019-10-15 01:08:26,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:26,218 INFO L462 AbstractCegarLoop]: Abstraction has 1140 states and 1781 transitions. [2019-10-15 01:08:26,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:26,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1781 transitions. [2019-10-15 01:08:26,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-15 01:08:26,223 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:26,224 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:26,441 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:26,441 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:26,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:26,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1245425385, now seen corresponding path program 1 times [2019-10-15 01:08:26,442 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:26,442 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421330664] [2019-10-15 01:08:26,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:26,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:26,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 01:08:26,651 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421330664] [2019-10-15 01:08:26,652 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668268176] [2019-10-15 01:08:26,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:27,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 2634 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:27,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 01:08:27,210 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 01:08:27,513 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:27,513 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2019-10-15 01:08:27,513 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537392871] [2019-10-15 01:08:27,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:27,514 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:27,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:27,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:08:27,515 INFO L87 Difference]: Start difference. First operand 1140 states and 1781 transitions. Second operand 5 states. [2019-10-15 01:08:28,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:28,394 INFO L93 Difference]: Finished difference Result 2243 states and 3588 transitions. [2019-10-15 01:08:28,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:28,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-10-15 01:08:28,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:28,407 INFO L225 Difference]: With dead ends: 2243 [2019-10-15 01:08:28,407 INFO L226 Difference]: Without dead ends: 1156 [2019-10-15 01:08:28,415 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 290 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:08:28,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2019-10-15 01:08:28,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1156. [2019-10-15 01:08:28,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1156 states. [2019-10-15 01:08:28,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1807 transitions. [2019-10-15 01:08:28,479 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1807 transitions. Word has length 150 [2019-10-15 01:08:28,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:28,479 INFO L462 AbstractCegarLoop]: Abstraction has 1156 states and 1807 transitions. [2019-10-15 01:08:28,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:28,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1807 transitions. [2019-10-15 01:08:28,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-15 01:08:28,484 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:28,484 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:28,700 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:28,701 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:28,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:28,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1929351523, now seen corresponding path program 1 times [2019-10-15 01:08:28,701 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:28,702 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548644342] [2019-10-15 01:08:28,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:28,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:28,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:28,873 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:08:28,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548644342] [2019-10-15 01:08:28,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506644177] [2019-10-15 01:08:28,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:29,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:29,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:08:29,441 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:29,816 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:08:29,817 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:29,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 6] total 17 [2019-10-15 01:08:29,817 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465307323] [2019-10-15 01:08:29,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:29,818 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:29,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:29,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:08:29,819 INFO L87 Difference]: Start difference. First operand 1156 states and 1807 transitions. Second operand 5 states. [2019-10-15 01:08:30,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:30,713 INFO L93 Difference]: Finished difference Result 2275 states and 3634 transitions. [2019-10-15 01:08:30,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:30,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2019-10-15 01:08:30,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:30,722 INFO L225 Difference]: With dead ends: 2275 [2019-10-15 01:08:30,722 INFO L226 Difference]: Without dead ends: 1172 [2019-10-15 01:08:30,729 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 306 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:08:30,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2019-10-15 01:08:30,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1172. [2019-10-15 01:08:30,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2019-10-15 01:08:30,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1833 transitions. [2019-10-15 01:08:30,776 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1833 transitions. Word has length 153 [2019-10-15 01:08:30,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:30,776 INFO L462 AbstractCegarLoop]: Abstraction has 1172 states and 1833 transitions. [2019-10-15 01:08:30,777 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:30,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1833 transitions. [2019-10-15 01:08:30,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-15 01:08:30,782 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:30,782 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:30,996 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:30,997 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:30,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:30,998 INFO L82 PathProgramCache]: Analyzing trace with hash -998466541, now seen corresponding path program 1 times [2019-10-15 01:08:30,998 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:30,999 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140197157] [2019-10-15 01:08:30,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:30,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:30,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:31,165 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:08:31,166 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140197157] [2019-10-15 01:08:31,166 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783066837] [2019-10-15 01:08:31,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:31,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 2640 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:08:31,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:31,785 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:08:31,786 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:08:32,096 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:32,096 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 6] total 16 [2019-10-15 01:08:32,096 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29387440] [2019-10-15 01:08:32,097 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:08:32,097 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:32,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:08:32,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:08:32,098 INFO L87 Difference]: Start difference. First operand 1172 states and 1833 transitions. Second operand 5 states. [2019-10-15 01:08:32,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:32,930 INFO L93 Difference]: Finished difference Result 2307 states and 3680 transitions. [2019-10-15 01:08:32,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:08:32,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2019-10-15 01:08:32,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:32,941 INFO L225 Difference]: With dead ends: 2307 [2019-10-15 01:08:32,941 INFO L226 Difference]: Without dead ends: 1188 [2019-10-15 01:08:32,947 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 312 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:08:32,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2019-10-15 01:08:32,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1188. [2019-10-15 01:08:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2019-10-15 01:08:32,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1859 transitions. [2019-10-15 01:08:32,999 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1859 transitions. Word has length 156 [2019-10-15 01:08:33,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:33,000 INFO L462 AbstractCegarLoop]: Abstraction has 1188 states and 1859 transitions. [2019-10-15 01:08:33,000 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:08:33,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1859 transitions. [2019-10-15 01:08:33,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-15 01:08:33,004 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:33,005 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:33,214 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:33,214 INFO L410 AbstractCegarLoop]: === Iteration 20 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:33,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:33,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1826937753, now seen corresponding path program 1 times [2019-10-15 01:08:33,215 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:33,216 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030409144] [2019-10-15 01:08:33,216 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:33,216 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:33,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:33,377 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:08:33,377 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030409144] [2019-10-15 01:08:33,377 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781538716] [2019-10-15 01:08:33,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:33,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 2643 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-15 01:08:34,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 01:08:34,092 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:34,231 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-15 01:08:34,231 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:08:34,231 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [10] total 14 [2019-10-15 01:08:34,232 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558767760] [2019-10-15 01:08:34,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:08:34,233 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:34,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:08:34,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2019-10-15 01:08:34,234 INFO L87 Difference]: Start difference. First operand 1188 states and 1859 transitions. Second operand 6 states. [2019-10-15 01:08:34,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:34,967 INFO L93 Difference]: Finished difference Result 2340 states and 3712 transitions. [2019-10-15 01:08:34,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:08:34,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2019-10-15 01:08:34,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:34,977 INFO L225 Difference]: With dead ends: 2340 [2019-10-15 01:08:34,977 INFO L226 Difference]: Without dead ends: 1205 [2019-10-15 01:08:34,983 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:08:34,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2019-10-15 01:08:35,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1198. [2019-10-15 01:08:35,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2019-10-15 01:08:35,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1876 transitions. [2019-10-15 01:08:35,033 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1876 transitions. Word has length 159 [2019-10-15 01:08:35,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:35,033 INFO L462 AbstractCegarLoop]: Abstraction has 1198 states and 1876 transitions. [2019-10-15 01:08:35,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:08:35,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1876 transitions. [2019-10-15 01:08:35,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-15 01:08:35,038 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:35,038 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:35,246 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:35,246 INFO L410 AbstractCegarLoop]: === Iteration 21 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:35,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:35,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1896832043, now seen corresponding path program 1 times [2019-10-15 01:08:35,246 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:35,247 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924615448] [2019-10-15 01:08:35,247 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:35,247 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:35,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:08:35,403 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924615448] [2019-10-15 01:08:35,403 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447626554] [2019-10-15 01:08:35,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:36,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 2659 conjuncts, 49 conjunts are in the unsatisfiable core [2019-10-15 01:08:36,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:08:36,137 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-15 01:08:36,138 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:08:36,525 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:08:36,526 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:08:36,526 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 10] total 21 [2019-10-15 01:08:36,526 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841408188] [2019-10-15 01:08:36,527 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:08:36,527 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:36,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:08:36,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:08:36,528 INFO L87 Difference]: Start difference. First operand 1198 states and 1876 transitions. Second operand 9 states. [2019-10-15 01:08:42,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:42,039 INFO L93 Difference]: Finished difference Result 3657 states and 5841 transitions. [2019-10-15 01:08:42,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:08:42,039 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 164 [2019-10-15 01:08:42,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:42,055 INFO L225 Difference]: With dead ends: 3657 [2019-10-15 01:08:42,056 INFO L226 Difference]: Without dead ends: 2512 [2019-10-15 01:08:42,063 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2019-10-15 01:08:42,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2512 states. [2019-10-15 01:08:42,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2512 to 2481. [2019-10-15 01:08:42,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2481 states. [2019-10-15 01:08:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2481 states to 2481 states and 3947 transitions. [2019-10-15 01:08:42,161 INFO L78 Accepts]: Start accepts. Automaton has 2481 states and 3947 transitions. Word has length 164 [2019-10-15 01:08:42,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:42,161 INFO L462 AbstractCegarLoop]: Abstraction has 2481 states and 3947 transitions. [2019-10-15 01:08:42,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:08:42,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2481 states and 3947 transitions. [2019-10-15 01:08:42,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-15 01:08:42,169 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:42,169 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:42,384 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:42,385 INFO L410 AbstractCegarLoop]: === Iteration 22 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:42,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:42,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1312680122, now seen corresponding path program 1 times [2019-10-15 01:08:42,386 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:42,387 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698768441] [2019-10-15 01:08:42,387 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:42,388 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:42,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-15 01:08:42,538 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698768441] [2019-10-15 01:08:42,538 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:08:42,538 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 01:08:42,539 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522405825] [2019-10-15 01:08:42,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:08:42,539 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:08:42,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:08:42,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:08:42,540 INFO L87 Difference]: Start difference. First operand 2481 states and 3947 transitions. Second operand 9 states. [2019-10-15 01:08:42,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:08:42,754 INFO L93 Difference]: Finished difference Result 4834 states and 7730 transitions. [2019-10-15 01:08:42,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:08:42,755 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2019-10-15 01:08:42,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:08:42,776 INFO L225 Difference]: With dead ends: 4834 [2019-10-15 01:08:42,776 INFO L226 Difference]: Without dead ends: 2400 [2019-10-15 01:08:42,791 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:08:42,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2019-10-15 01:08:42,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 2396. [2019-10-15 01:08:42,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2396 states. [2019-10-15 01:08:42,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 3820 transitions. [2019-10-15 01:08:42,910 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 3820 transitions. Word has length 167 [2019-10-15 01:08:42,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:08:42,911 INFO L462 AbstractCegarLoop]: Abstraction has 2396 states and 3820 transitions. [2019-10-15 01:08:42,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:08:42,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 3820 transitions. [2019-10-15 01:08:42,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 01:08:42,915 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:08:42,915 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:08:42,916 INFO L410 AbstractCegarLoop]: === Iteration 23 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:08:42,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:08:42,916 INFO L82 PathProgramCache]: Analyzing trace with hash 853816395, now seen corresponding path program 1 times [2019-10-15 01:08:42,916 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:08:42,916 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004051703] [2019-10-15 01:08:42,917 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:42,917 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:08:42,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:08:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:43,079 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-15 01:08:43,080 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004051703] [2019-10-15 01:08:43,080 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948142930] [2019-10-15 01:08:43,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:08:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:08:43,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 2678 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:08:43,591 INFO L279 TraceCheckSpWp]: Computing forward predicates...